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Core i7-8550U vs i5-6500


Description
The i7-8550U is based on Kaby Lake architecture while the i5-6500 is based on Skylake.

Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i5-6500 gets 179.4 k points.

Summarizing, the i5-6500 is 1.1 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
506e3
Core
Kaby Lake-R
Skylake-S
Architecture
Base frecuency
1.8 GHz
3.2 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
4/4
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
August 2017
September 2015
Mean monothread perf.
64.2k points
53.7k points
Mean multithread perf.
166.12k points
179.44k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-8550U
i5-6500
Test#1 (Integers)
3.91k
3.46k (x0.88)
Test#2 (FP)
15.98k
14.61k (x0.91)
Test#3 (Generic, ZIP)
5.11k
4.66k (x0.91)
Test#1 (Memory)
11.05k
6.99k (x0.63)
TOTAL
36.05k
29.71k (x0.82)

Multithread

i7-8550U

i5-6500
Test#1 (Integers)
11.76k
12.52k (x1.06)
Test#2 (FP)
50.15k
51.13k (x1.02)
Test#3 (Generic, ZIP)
16.76k
17.41k (x1.04)
Test#1 (Memory)
4.17k
3.9k (x0.94)
TOTAL
82.84k
84.96k (x1.03)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-8550U
i5-6500
Test#1 (Integers)
13.15k
13.07k (x0.99)
Test#2 (FP)
19.7k
20.23k (x1.03)
Test#3 (Generic, ZIP)
5.1k
4.93k (x0.97)
Test#1 (Memory)
9.21k
9.2k (x1)
TOTAL
47.16k
47.43k (x1.01)

Multithread

i7-8550U

i5-6500
Test#1 (Integers)
34.13k
49.62k (x1.45)
Test#2 (FP)
53.79k
74.82k (x1.39)
Test#3 (Generic, ZIP)
13.91k
18.46k (x1.33)
Test#1 (Memory)
4.12k
4.21k (x1.02)
TOTAL
105.95k
147.12k (x1.39)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-8550U
i5-6500
Test#1 (Integers)
25.37k
22.89k (x0.9)
Test#2 (FP)
22.6k
19.87k (x0.88)
Test#3 (Generic, ZIP)
5.13k
4.58k (x0.89)
Test#1 (Memory)
11.1k
6.36k (x0.57)
TOTAL
64.2k
53.7k (x0.84)

Multithread

i7-8550U

i5-6500
Test#1 (Integers)
72.82k
84.36k (x1.16)
Test#2 (FP)
71.71k
72.91k (x1.02)
Test#3 (Generic, ZIP)
17.35k
16.08k (x0.93)
Test#1 (Memory)
4.24k
6.1k (x1.44)
TOTAL
166.12k
179.44k (x1.08)

Performance/W
i7-8550U
i5-6500
Test#1 (Integers)
4855 points/W
1298 points/W
Test#2 (FP)
4781 points/W
1122 points/W
Test#3 (Generic, ZIP)
1157 points/W
247 points/W
Test#1 (Memory)
282 points/W
94 points/W
TOTAL
11075 points/W
2761 points/W

Performance/GHz
i7-8550U
i5-6500
Test#1 (Integers)
6343 points/GHz
6359 points/GHz
Test#2 (FP)
5650 points/GHz
5521 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1271 points/GHz
Test#1 (Memory)
2774 points/GHz
1766 points/GHz
TOTAL
16049 points/GHz
14917 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4